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Kaon Weak Matrix Elements in 2+1 flavor DWF QCD: UV subtractions and chiral behavior

Presenter: Robert Mawhinney — Columbia University

Robert D. Mawhinney (for the RBC and UKQCD collaborations)

K → π and K → 0 matrix elements of Δ S = 1 operators have been measured in 2+1 flavor DWF QCD on (3 fm)3 lattices with a−1 ≈ 1.6 GeV. Two light dynamical sea quark masses have been used, along with with six valence quark masses. Values for the unrenormalized matrix elements will be presented, with an emphasis on the subtraction of power divergent mixings and the comparison of our data with the expected chiral behavior of the matrix elements.